Leather-dressing machine.



No. 632,364. Patented Sept. 5, I899. c. E. PELLOW.

LEATHER DRESSING MACHINE.

(Application filed May 28, 1898.) (N0 MndeL) 2 Sheets-Sheet l.

m: NORRIS pnzns a0, PNOTO-LITMQ, WASHINGTON u. c.

llnrrnn STAT S A'rnN'r CHARLES E. PELLOVV, OF ALAMEDA, CALIFORNIA.

LEATHER-DRESSING MACHINE.

SPECIFICATION forming part of Letters Patent No. 632,364, dated September 5, 1899.

Application filed May 23, 1898. Serial No. 681,523. (No model.)

To aZZ whom it may mw rn: in the drawings, forming a part of this speci- Be it known that I, CHARLES E. PELLOW, a fication, in whichcitizen of Canada, residing at Alameda, county Figure I is a side elevation of a machine for of Alameda, and State of California, have inscouring and setting leather constructed ac- 55 vented certain new and useful Improvements cording to my invention. Fig. II is a plan in Leather Scouring and Setting Machines; view of the same machine. Fig. III is an enand I hereby declare the following to be a full, larged side view of the head or main operatclear, and exact description of the same, refing part in which the rubbing implements are erence being had to the accompanying drawmounted. Fig. IV is a bottom view of Fig. 60 1o ings, forming a part of this specification. III, partially in section. Fig. V is an end My invention relates to leather currying view of Fig. III with the engaging and disenand to certain improvements in machines for gaging devices'for the rubbing implements. scouring and setting leather by rubbing ac- Fig. VI is a view in the opposite plane of tion applied in a novel and efficient manner. some of the details in Fig. V 65 My improvements consist in an improved Similar letters and numerals of reference means of attaining a rectilinear movement of indicate'corresponding parts. 7 the double-acting rubbing implements by ra- In the operation of scouring and setting dial devices and without the use of; slides; machines the implements, commonly of hard in employing the angular movement of the stone, are given a reciprocating motion, alsoa 7o reciprocating connecting-rod to produce the movement to and from the leather, so that they required oscillation and alternate action of will act'alternately and oppositely from each the rubbing implements which are mounted other, rubbing right and left away from the directly thereon; in the application of presscenter, while the table on which the leather is ing-springs directly over and opposite the placedis adjusted byhand,so that thevarious 75 rubbing implements, thus relieving the strain portions of its surface will receive in different upon the operative parts; in devices for redirections the required amount of rubbing, leasing the pressure on the rubbing impleor scouring and setting, as it is usually ments by the driving power, requiring only called. These rubbingimplements have hithengagement by an attendant; in devices to erto been guided by rectilinear slides and op- 80 3o adjust and regulate the amount of pressure erated by a crank and connecting-rod. In applied on the rubbing-surfaces, also their my invention these slides are dispensed with vertical adjustment for various thicknesses and the implements are attached directly to of leather; in the application of antifriction the connecting-rod, extended for that purrollers or casters to the bottom of the movable pose, and the rectilinear movement is ob- 85 3 5 table on which the leather is supported, and tained by radial links and a movable fulcrum also in other features hereinafter fully exthat compensates the arcs described by the plained in connection with the'drawings, and connections. set forth'in the claims atthe end of this speci-' Referring to the drawings, the main frame fication. 1 is rectangular in contour, provided with an 0 40 The objects of-my invention are to secure a arched member 2, that supports the guides 3 more perfect and efficient action of machines for the movable fulcrum 4, and also forms difor scouring and setting leather, to dispense agonal braces for the main frame. A crankwith slides for the reciprocating parts and shaft 5 is placed at one end of the machine, various operative details that render such provided with a fly-wheel 6 and driving-pul- 5 machines perishable and liable to derangeley 7. The connecting-rod'8 is made integral ment, to avoid weight in the reciprocating with an extension 9, hereinafter "called a parts of the machine, and to attain a higher beam, on which is supported the devices rate of reciprocating motion and a simple to support and applythe rubbing implements and easy means of adjustment both of the 10, the latter secured to pivoted plates 11 by 100 implements and material operated upon. the clamps or jaws 12, as shown inFigs. III To these ends I make provisions as shown and IV. The connecting-rod 8 is suspended in the center of the extension 9 by a pendulous main link 13, pivoted at the bottom 14 to the plates 18 and beam 9 and at the top to the sliding fulcrum 4, the weight of this link and of the beam 9 being supported by the links 15, as seen in Figs. I and II. These links describe an are 16, the radius of which being approximately half the distance between the points 14 and 17, produces a modified and nearly rectilinear movement at the point 14 and of the beam 9, except as to the angular movement of the latter produced by the connecting-rod 8, the top fulcrum 4 of the links 13 sliding vertically a distance equal to the versed sine of one-half the arc 1(3. The component of these movements at the point of action when the implements 10 bear upon the leather is in effect a curved line at the entrance and producing a nearly or complete rectilinear movement throughout the central and working portion of the stroke, modified, of course, by the position of the fulcrum 4. By this construction I avoid the use of horizontal guides or slides, that are objectionable because of wear, care, and friction.

Referring next tothe rubbing implements 10 and the devices for supporting, presenting, and releasing them, the hinged plates 11 are pivoted to the central 'main member, formed of two metal plates 18, attached one on each side of the beam 9. The plates 11 are forced downward by the springs 19, the strain of which is regulated by the screw-nuts 20 on the stems 21. These stems 21 are provided at the top with screw-nuts 22 and shells 23, that form struts or distance-pieces between the nuts 22 and the collars 24, fitting loosely on the stems 21, which, with the shells 23, slide loosely through the beam 9, thus regulating the vertical range each way of the stem 21 and of the implements 10, as will be presently explained. The stems 21, being pivoted at 25 to the swinging plates 11, the angular or oscillating motion of the beam 9 causes the plates 26 to come in contact with the nuts 22, and thus raise the plates 11 and the implements 1O alternately clear of the leather 27, so that they will act only in one direction, as indicated by arrows in Fig. III. As, however, the implements 10 have to be raised and held above their working position while the machine is in motion, I employ devices for this purpose consisting of the two sliding members 28 29, supported in the brackets 30 and provided at the sides with angular flanges 31, that have diagonal slots 32,.into which fit pins 33, that are inserted in the collars 24 on the stems 21. bers 28 or 29 inward or toward the center the pins 33 follow the slots 32 and raise the stems 21 accordingly, holding one or both of the implements 10 clear of the work when the leather is to be removed or changed or for any reason that requires cessation of the machines operation. To perform this last-n amed f unction of moving the members 28 29, I form an By moving either of the memextension 34 on the pendulous main link 13, as shown in section at Fig. IV and indicated by dotted lines in Fig. III. On the bottom of and attached to the sliding members 28 29 I place double pawls or hooks 35, that can be engaged by the extension 34 of the link 13, as seen in Fig. IV, thus positively moving the members 28 29 to the right or left, as the engagement of the pawl-hooks 35 will determine. To operate these pawl-hooks 35, there is provided two oscillating wards or followers 36, pivoted at 37, the ends of which press inward and against the ends of the pawl-hooks 35, so as to move the members 28 29 forward or back, as the implements 10 are to be raised or lowered. To operate the wards 36, there are provided two sliding rods 39 and 40, and on these bent studs 41, that engage the wards 36 at 38, so that by sliding these rods 39 and 40 either way the hooks on the pawl 35 are engaged accordingly. To operate the sliding rods 39 and 40, which engage, respectively, the Wards 36, that operate the pawls 35, that move the members 28 and 29, there are set parallel with the movement of the machine rods 42 and 43, supported by links 44, attached to the main frame at 45. The rods 42 and 43 slide in adjustable jaws 46 and 47, so that the rods 39 or 40 can be moved either way across the machine by an operator pressing or pulling the rods 42 43 laterally outward or inward while the machine is in motion.

To hold the rods 42 and 43 when placed in their inward or outward positions and to prevent their gravity from moving the rods 39 and 40 and releasing the pawl-hooks 35, I provide oscillating spring-keepers 48, pivoted at 50 to a stationary standard 51, on each side of said standard, having springs 49, which bear against an abutment on links 44, and thereby hold them in their forward positions during the time the pawl-hooks 35 are engaged. The mechanism heretofore described for moving the members 28 and 29 and raising or lowering the implements 1O admits of various modifications. I have described a method that operates well in practice, reserving to myself the privilege of modifying these devices to produce a like result Without departing from the essential and more important features of my invention.

' To support the leather being treated, I provide a large stationary table 52, having a recess at 53, where an operator may stand. on the top of this main table 52 there is placed a smaller movable table 54, provided with ball-bearing casters 55, so as to permit a free and easy movement of the table 54 and the leather 27 thereon to receive the section of the implements 10 in any direction. By attaching the swivel-casters 55 to the bottom of the movable table 54 it will be seen that their number and the area to be provided for are much less than if these casters were mounted on the main table 52 and stationary. By this construction the plane of guidance is re moved from the upper to the lower or main table, and the former can be of any required thickness to prevent it from Warping, the casters and not its bottom surface forming the movable plane for this table 54.

The main table 52 besides maintaining a true plane of movement for the movable table 54 serves the further purpose of protecting the machine-frame and the floor beneath from water and slime that can be collected and carried 0% by the usual devices employed in such cases, and the machine can for that reason be operated on upper floors of a building.

In operating the machine the crank-shaft 5 is set in motion and the rods 42 and 43 are drawn outward to engage the ends a a of the pawls 35 with the lever extension 34 of the main link 13, raising in the manner before described the stems 21, swing-plates 11, and implements 10. A side of leather 27 is then laid on the movable table 54, the rods 42 and 43 are pressed inward, and the other ends of the pawl-hooks 35 engage, moving the members 28 and 29 outward from the center, permitting the implements 10 to bear upon the leather 27 outward from the center and alternately as the angle motion of the connecting-rod 8 determines.

If the pressure is not sufficient or is too great, the nut 20 is turned to compress or extend the springs 19 accordingly. These springs 19 being placed directly over the stones or rubbing implements 10, there is no strain upon the pivots 56 and the tension or compression required is readily adjusted.

By this construction it may be seen that the reciprocating elements or parts of the machine are greatly reduced in weight and that the reciprocating motion and consequent amount of Work done in a given time is increased in proportion; also, that the various strains, jar, and concussion are reduced correspondingly.

Having thus explained the nature and objects of my invention, what I claim as novel, and desire to secure by Letters Patent, is-

1. In a leather scouring and setting machine, in combination, a main frame, a crankshaft and connecting-rod, a beam extension, a pair of rubbing implements pivotally suspended from said beam extension, link 13 pivoted to said beam extension, having movable fulcrum 4, and link 15, pivoted to the main frame and to link 13, said link 15 being of a length between its pivots one-half the distance between the pivots of the link 13, whereby approximately rectilinear motion is imparted to the beam extension, substantially as specified.

2. In a leather scouring and setting machine, in combination, amain frame, a crankshaft and connecting-rod, a beam extension, a pair of rubbing implements pivotally suspended from said beam extension by means of side plates 18 and hinged plates 11, means for alternately raising and depressing said rubbing implements, pivoted stems 21, springs 19, shells 23, and adj usting-nuts 22, substantially as specified.

3. In a leather scouring and setting machine, in combination, a main frame, acrankshaft and connecting-rod, a beam extension, a pair of rubbing implements pivotally suspended from said beam extension, means for depressing said rubbing implements on the working stroke each way, pivoted link 13, ex-

tension-lever 34, and sliding members 28, 29, slotted as at 32 for raising the rubbing implements clear of the leather operated upon, substantially as specified.

4. The combination of beam extension 9, pivoted link 13, extension-lever 34, pawls 35, sliding plates 28, 29, slotted as at 32, stems 21, pivoted to hinged plates 11, and pins 33, whereby said hinged plates are lifted and depressed on the alternate strokes of the said beam extension, substantially as specified.

5; The combination of beam extension 9, pivoted link 13, extension-lever 34, pawls 35, sliding plates 28, 29, hinged plates 11, means whereby said sliding plates raise and depress said plates alternately, oscillating wards 36, sliding rods 39, 40, rods 42, 43, and links 44, substantially as specified.

6. The combination of beam extension 9, pivoted link 13, extension-lever 34, pawls 35, sliding plates 28, 29, slotted as at 32, pivoted stems 21, pins 33, hinged plates 11, oscillating wards 36, sliding rods 39, 40, rods 42, 43, links 44, and spring-keepers 48, substantially as specified.

These features I believe to be novel and useful and ask that Letters Patent be granted therefor.

CHARLES E. PELLOW.

Witnesses:

H. SANDERSON, HENRY H. BATES. 

